A potentially serious problem with Taq polymerase in PCR is its lack of proofreading ability. Briefly explain why this can be a problem and at which stages during the PCR process this is most and least problematic
What will be an ideal response?
Replication errors are introduced by Taq polymerase as a result of its lack of proofreading. The earlier they are introduced, the greater the number of descendant copies that will also have the error. Therefore, such errors are least problematic when they occur late in the PCR process.
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Per unit weight, stored fat yields more than twice the energy of stored glycogen
A. true B. false
Different alleles that are both expressed in a heterozygote are
A) dominant. B) codominant. C) incompletely dominant. D) homozygous dominant.
According to the accompanying figure, global warming would result from an increase in which of the labeled components?
a. 1 and 2
b. 2
c. 2 and 3
d. 3
e. 4
The fact that energy transformations increase the amount of entropy is the basis of which of the following?
a. cell theory b. first law of thermodynamics c. second law of thermodynamics d. oxidation-reduction reactions